.Buildings.Fluid.HydronicConfigurations.ActiveNetworks.Examples.BaseClasses.Load

Information

This model represents a thermal load on a hydronic circuit, typically a terminal unit with recirculating air such as a fan coil unit. It takes the fraction of the design load u as input and returns the control valve demand signal yVal as output. In steady-state conditions, the model provides zero load for u=0 and the design load for u=1. However, for a cooling load with condensation, the relationship between u and the load is not linear. The main modeling assumptions are described below.

• The heat exchanger is modeled in steady-state by default (dynamics may be reintroduced with the parameter energyDynamics).
• No pressure drop is considered, neither on the load side, nor on the source side (the design pressure drop on the source side may be reset with the parameter dpLiq_nominal).
• The mass flow rate and the inlet conditions on the load side are constant. The load is modulated by varying the supply temperature set point.

Contents

Revisions

• June 30, 2022, by Antoine Gautier:
  First implementation.